js代理

时间：2014-05-14 07:42:30 收藏：0 阅读：307

<!doctype html>
<html lang="en">
 <head>
  <title>proxy</title>
  <style>
  img{width:200px;heigth:200px;}
  </style>
 </head>
 <body>
  <div id="aa">
  <img id="img1" src="http://images.cnblogs.com/cnblogs_com/lj915/578797/o_1.jpg">
  <img id="img2" src="http://images.cnblogs.com/cnblogs_com/lj915/578797/o_2.jpg">
  </div>
  <script>
  document.getElementById("aa").onclick = function(e){     
        var target = _getTarget(e);
        if(target.tagName.toLowerCase() == "img") {
            alert(target.id);
        }  
  }
  function _getTarget(event) {      
      return event.target || event.srcElement;
  }
  </script>
 </body>
</html>

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